These days, the techniques for amplifying numbers have been exhausted to the point where we need to talk about minerals...
Let me give you some data. Many ordinary people probably have no idea how much ore is needed to produce a piece of metal?
The general grade of copper mines in my country is not very good. “The average grade of copper mines in China is 0.87%” ( Zijin Mining , 2020), which means that there are 870 tons of copper in 100,000 tons of ore.
my country's tin ore reserves rank first in the world. "my country's tin ore is mainly cassiterite sulfide type", "the average grade of primary tin ore retained resource reserves is 0.38%" (China's Superior Mineral Resources Report), which means that ten 380 tons of tin out of 10,000 tons.
Zinc mine is not so exaggerated. When it comes to my country, " lead-zinc mine has many poor ores and few rich ores...the average zinc grade is 2.69%" (China Lead-Zinc Mine Resource Survey Report). 2690 tons out of 100,000 tons.
In other words, if I want to talk about saving metals, not talking about the metal itself, but talking about the corresponding ore, the number will be magnified by about 200 times.
I recycled a 1 meter long USB cable today. I saved about 3.5kg of copper ore .
recommends using the carbon dioxide volume corresponding to carbon emissions at normal temperature and pressure next time. The unit is milliliters.
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